Construction method for water dripping joint of outer facade of concrete structure

The invention belongs to the technical field of water dripping joint construction, particularly relates to a construction method for a water dripping joint of an outer facade of a concrete structure and provides the following scheme aiming at the problems that according to an existing concrete building outer facade water dripping joint construction method, water dripping joint construction and outer wall plastering cannot be carried out at the same time, and the project progress is affected. The method comprises the following steps that S1, a water dripping joint formwork meeting the practical standard is manufactured, the water dripping joint formwork is placed aside for later use after being manufactured, and the cleanliness of the outer wall of the water dripping joint formwork is kept; and S2, black paint is smeared on the inner wall of the water dripping joint formwork in the S1, and the black paint is evenly smeared on the inner wall of the water dripping joint formwork. According to the method, the wat